Black & white HDR: Alpine hut

Today a mountain hut (alpine hut, mountain hostel, mountain shelter - whatever you call it) in Koscieliska valley, Tatra mountains, Poland. Yesterday I posted color version of this photo on my FB profile but I think that B&W version works as well.

EXIF data:
Camera: Canon 5D MK II
Lens: Canon 24-105 f/4 L IS USM
Focal length: 32 mm
Aperture: f/7.1
Exposure time: 1/500 s
ISO: 800
Number of exposures: 3
E.V. Step: 2 EV
Flash used: no
Tripod used: no
Filters used: circular polarizing filter
Software: Magic Lantern 2.3, Photomatix Pro 4.2.5 (Details Enhancer), Lightroom 4.2, Photoshop CS6